The 24-Degree Sweet Spot for Your AC
Your air conditioner is likely the biggest contributor to a high summer electricity bill. A common habit is to set the AC to a frigid 18°C, believing it cools the room faster. However, experts and the Bureau of Energy Efficiency (BEE) suggest that 24°C
is the ideal temperature for both comfort and energy savings in the Indian climate. An AC's compressor, the main energy-consuming component, simply works longer to reach a lower temperature; it doesn't cool the air any faster. By setting your thermostat to 24°C instead of a lower temperature, the compressor runs for shorter cycles. For every degree you raise the temperature, you can save up to 6% on your electricity consumption. Shifting from 20°C to 24°C could potentially result in savings of around 24%. This simple change reduces the strain on your appliance, extending its lifespan, and contributes to a lower national peak power demand during hot months.
Slaying the 'Vampire Power' Drain
Even when switched off, many of your appliances are silently consuming electricity. This phenomenon is known as standby power, or 'vampire power'. Devices with a remote control, digital display, or an external power adapter—like televisions, set-top boxes, microwave ovens, and phone chargers left in the socket—are common culprits. While the power drawn by a single device might seem trivial, the cumulative effect of 20 to 40 such devices in a typical home can be significant. Standby power can account for 5% to 10% of a household's total energy use. The easiest way to combat this is to turn off appliances at the wall switch when they are not in use. For convenience, consider plugging multiple devices like your TV and sound system into a single power strip, allowing you to cut power to all of them with one flick of a switch. Smart plugs can also be used to schedule automatic power cut-offs for devices that don't need to be on standby.
Smart Habits for Major Appliances
Beyond the AC, other major appliances offer opportunities for savings. Your refrigerator, which runs 24/7, is a prime example. Ensure the door seals are tight and clean the condenser coils on the back regularly to help it run efficiently. Avoid placing hot food directly into the fridge, as this makes the compressor work harder. For your washing machine, washing full loads in cold water whenever possible can make a big difference, as heating water is a major energy cost. When it comes to water heaters or geysers, another power-hungry appliance, heat water only when you need it. Leaving it on all day results in wasted energy as it repeatedly reheats the water to maintain the set temperature. Switching it on 15-20 minutes before use is usually sufficient.
Lighting the Way to Lower Bills
Lighting is an area where small changes yield noticeable savings. If you are still using incandescent bulbs or CFLs, switching to LED lights is one of the quickest ways to cut costs. LEDs use up to 80% less energy and last significantly longer, making them a smart investment that pays for itself over time. Beyond technology, simple habits are key. Make it a routine to switch off lights and fans when you leave a room. Utilising natural light during the day by keeping curtains open can also reduce the need for artificial lighting and brighten your home for free.
